I have been trying to use this software for more than a year. Rendez vous sharing doesnt work. Authors keep saying that a fix is under way. Speed Download also fails to download some types or files sometimes even if they are set up for download in the preferences. File helper apps soometimes don;t launch. And above all, my system and Safari are more unstable and crash sometimes Inot to mention SD itself). The speed increase is actually trivial most of the time and affects the performance of other internet apps.
I am not using this software anymore.